Hex Socket Head Cap Screw Dedra SI-M8X35/KL-8.8 — M8 × 35 mm, Grade 8.8

Dedra SI-M8X35/KL-8.8 is an M8 × 35 mm hex socket head cap screw produced to strength class 8.8. The screw has an internal hex drive designed for use with an Allen key and delivers medium-high tensile strength for demanding mechanical and structural assemblies. It is suitable for fastening tasks in repair, construction, machinery, and furniture where reliable clamp force and shear resistance are required.

Advantages

The hex socket head provides a compact head profile and secure drive engagement, reducing the risk of cam-out during installation. Grade 8.8 material composition gives a balance of tensile strength and ductility appropriate for many industrial and construction applications. Its M8 × 35 mm dimensions make it compatible with standard metric threaded holes and nuts, enabling straightforward replacement and interchangeability.

Suitable for

• Metal-to-metal structural joints in machinery and frameworks
• Metal-to-wood and composite assemblies in furniture and fixtures
• Repair and maintenance tasks requiring medium-high strength fasteners
• Mounting brackets, housings, and components in mechanical systems

Key specifications

• Thread size: M8
• Length: 35 mm (measured from under head to end of thread)
• Head type: hex socket head cap screw
• Drive type: internal hex (Allen) drive
• Strength class: 8.8 (medium-high tensile strength)
• Typical applications: structural and mechanical fastening

How to use

Select an appropriately sized Allen key for the M8 internal hex drive and ensure mating threads or nuts are clean and undamaged. Insert the screw through the components to be joined, engage the nut if required, and tighten progressively to the manufacturer or application-specified torque to achieve the correct clamp load. Avoid over-tightening; retorque if accessories such as washers are added or after initial load cycling.

Usage recommendations

Use a calibrated torque wrench or torque driver to apply the recommended torque for M8 screws in grade 8.8 where accurate preload is critical. For corrosion-prone environments, consider compatible coatings or stainless alternatives and verify material compatibility with mating parts.